/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.ignite.internal.storage.util;

/**
 * Storage states.
 */
public enum StorageState {
    /** Storage is running. */
    RUNNABLE,

    /** Storage is in the process of being closed or has already closed. This is a terminal state. */
    CLOSED,

    /** Storage is in the process of rebalancing. */
    REBALANCE,

    /** Storage is in the process of cleanup. */
    CLEANUP,

    /** Storage is in the process of being destroyed or it is already destroyed. This is a terminal state. */
    DESTROYED;

    /**
     * Returns {@code true} if this is a terminal state (that is, we cannot leave it).
     */
    public boolean isTerminal() {
        return this == CLOSED || this == DESTROYED;
    }
}
